Avoit using copyright as a varibale name

Prefer copyrght to avoid name collision with the built-in
copyright

Signed-off-by: Philippe Ombredanne <pombredanne@nexb.com>

Author: pombredanne

src/summarycode/summarizer.py

@@ -290,16 +290,16 @@ def get_origin_info_from_top_level_packages(top_level_packages, codebase):
     return declared_license_expression, declared_holders, primary_language
 
 
-def get_holders_from_copyright(copyright):
+def get_holders_from_copyright(copyrght):
     """
-    Yield holders detected from a `copyright` string or list.
+    Yield holders detected from a `copyrght` string or list.
     """
     numbered_lines = []
-    if isinstance(copyright, list):
-        for i, c in enumerate(copyright):
+    if isinstance(copyrght, list):
+        for i, c in enumerate(copyrght):
             numbered_lines.append((i, c))
     else:
-        numbered_lines.append((0, copyright))
+        numbered_lines.append((0, copyrght))
 
     holder_detections = CopyrightDetector().detect(
         numbered_lines,